| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a transfer device for sewage treatment which is high in the degree of freedom in sizes, shapes, etc., and is easy to handle. SOLUTION: This liquid transfer device 13 for sewage treatment consists of the constitution having a hermetic vessel 17 arranged on the outside of a sewage treatment tank 3, an air supply pipe 19, a liquid inflow pipe 21, a liquid transfer pipe 23 and a U-pipe 25. The liquid introduced into the hermetic vessel 17 by the pressure of the air supplied from the air supply pipe 19 is transferred by the liquid transfer pipe 23. Since the device consists of the constitution obtd. by arranging the hermetic vessel 17, etc., on the outside of the sewage treatment tank, there is no need for pulling up the hermetic vessel 17 from the inside of the liquid in the tank at the time of maintenance, etc., the maintenance, etc., may be executed as it is in the state of installing the hermetic vessel on the outside of the tank and the handling thereof is easy. Since the hermetic vessel 17 is not submerged in the tank, there is no need for taking the buoyancy, weight, shape, etc., into consideration and the degree of freedom in designing in the sizes, shapes, etc., may be enhanced.</p> |
